使用TS来编写express服务器的方法步骤

# 使用express生成器之前必须全局安装过express-generator
$ npm install -g express-generator

# --view后面是确定你使用哪种视图引擎，server是你工程的名称
$ express --view ejs server

# 生成的工程并不会默认给我们添加git，这里我们使用git init初始化一下
$ git init

node_modules/
dist/

$ npm install -g typescript

$ npm install @types/node --save-dev

$ npm install @types/express --save-dev

{
 "compilerOptions": {
  "target": "es2016",
  "module": "commonjs",
  "lib": ["es2016","dom"],
  "outDir": "./dist",
 },
 "exclude": ["node_modules"]
}

$ tsc

$ node ./dist/bin/www

$ npm install ts-node -g

# 用ts-node直接运行项目，这个库会将我们的ts文件编译成js文件保存在内存中进行引用
$ ts-node ./bin/www

$ npm install nodemon -g

# 执行命令运行项目
$ nodemon -e ts --exec ts-node ./bin/www

"scripts": {
 "start": "ts-node ./bin/www",
 "dev": "nodemon -e ts --exec ts-node ./bin/www",
 "build": "tsc",
 "server": "node ./dist/bin/www"
}

# 未全局安装的需要全局安装
$ npm install eslint -g

$ eslint --init
√ How would you like to use ESLint? · style    
√ What type of modules does your project use? · commonjs
√ Which framework does your project use? · none
√ Does your project use TypeScript? · Yes
√ Where does your code run? · node
√ How would you like to define a style for your project? · guide
√ Which style guide do you want to follow? · standard
√ What format do you want your config file to be in? · JavaScript
Checking peerDependencies of eslint-config-standard@latest
Local ESLint installation not found.
The config that you've selected requires the following dependencies:

@typescript-eslint/eslint-plugin@latest eslint-config-standard@latest eslint@>=7.11.0 eslint-plugin-import@>=2.22.1 eslint-plugin-node@>=11.1.0 eslint-plugin-promise@>=4.2.1 eslint-plugin-standard@>=4.0.2 @typescript-eslint/parser@latest
√ Would you like to install them now with npm? · Yes

extends: [
 'standard',
 'eslint:recommended',
 'plugin:@typescript-eslint/recommended'
]

{
 "compilerOptions": {
 ...
  "esModuleInterop": true
 }
}